libstdc++-v3/testsuite/std/time/year_month_weekday/3.cc

   1 // { dg-options "-std=gnu++2a" }
   2 // { dg-do compile { target c++2a } }
   3
   4 // Copyright (C) 2020 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // PR libstdc++/97613
  22 // Test year_month_weekday to sys_days conversion for extreme values of index().
  23
  24 #include <chrono>
  25
  26 void
  27 test01()
  28 {
  29   using namespace std::chrono;
  30   using ymd = year_month_day;
  31
  32   static_assert(ymd{sys_days{2020y/January/Sunday[0]}} == 2019y/December/29);
  33   static_assert(ymd{sys_days{2020y/January/Monday[0]}} == 2019y/December/30);
  34   static_assert(ymd{sys_days{2020y/January/Tuesday[0]}} == 2019y/December/31);
  35   static_assert(ymd{sys_days{2020y/January/Wednesday[0]}} == 2019y/December/25);
  36   static_assert(ymd{sys_days{2020y/January/Thursday[0]}} == 2019y/December/26);
  37   static_assert(ymd{sys_days{2020y/January/Friday[0]}} == 2019y/December/27);
  38   static_assert(ymd{sys_days{2020y/January/Saturday[0]}} == 2019y/December/28);
  39
  40   static_assert((2020y).is_leap());
  41   static_assert(ymd{sys_days{2020y/March/Sunday[0]}} == 2020y/February/23);
  42   static_assert(ymd{sys_days{2020y/March/Monday[0]}} == 2020y/February/24);
  43   static_assert(ymd{sys_days{2020y/March/Tuesday[0]}} == 2020y/February/25);
  44   static_assert(ymd{sys_days{2020y/March/Wednesday[0]}} == 2020y/February/26);
  45   static_assert(ymd{sys_days{2020y/March/Thursday[0]}} == 2020y/February/27);
  46   static_assert(ymd{sys_days{2020y/March/Friday[0]}} == 2020y/February/28);
  47   static_assert(ymd{sys_days{2020y/March/Saturday[0]}} == 2020y/February/29);
  48
  49   static_assert(!(2019y).is_leap());
  50   static_assert(ymd{sys_days{2019y/March/Sunday[0]}} == 2019y/February/24);
  51   static_assert(ymd{sys_days{2019y/March/Monday[0]}} == 2019y/February/25);
  52   static_assert(ymd{sys_days{2019y/March/Tuesday[0]}} == 2019y/February/26);
  53   static_assert(ymd{sys_days{2019y/March/Wednesday[0]}} == 2019y/February/27);
  54   static_assert(ymd{sys_days{2019y/March/Thursday[0]}} == 2019y/February/28);
  55   static_assert(ymd{sys_days{2019y/March/Friday[0]}} == 2019y/February/22);
  56   static_assert(ymd{sys_days{2019y/March/Saturday[0]}} == 2019y/February/23);
  57
  58   static_assert(ymd{sys_days{2020y/December/Sunday[5]}} == 2021y/January/3);
  59   static_assert(ymd{sys_days{2020y/December/Monday[5]}} == 2021y/January/4);
  60   static_assert(ymd{sys_days{2020y/December/Tuesday[5]}} == 2020y/December/29);
  61   static_assert(ymd{sys_days{2020y/December/Wednesday[5]}} == 2020y/December/30);
  62   static_assert(ymd{sys_days{2020y/December/Thursday[5]}} == 2020y/December/31);
  63   static_assert(ymd{sys_days{2020y/December/Friday[5]}} == 2021y/January/1);
  64   static_assert(ymd{sys_days{2020y/December/Saturday[5]}} == 2021y/January/2);
  65 }